Viewing archive of Tuesday, 12 December 2000

Solar activity report

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Report of Solar-Geophysical Activity 2000 Dec 12 2200 UTC
Prepared by the NOAA © SWPC and processed by

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 347 Issued at 2200Z on 12 Dec 2000

IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z

Solar activity was moderate, by virtue of a single M1/1f flare originating from Region 9267 (N07E26) at 12/1507Z. Other activity included only a few minor C-class events.
IB. Solar Activity Forecast
Solar activity is expected to be mostly low, with a continued probability for isolated minor M-class events from Region 9267. Old active regions due to return in the next two days could provide additional increased activity based on their previous rotations.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
The geomagnetic field was mostly quiet, with a single period of unsettled conditions recorded at Boulder during the interval 12/1500-1800Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to remain quiet to unsettled for the next three days.
III. Event Probabilities 13 Dec to 15 Dec
Class M40%40%40%
Class X01%01%01%
IV. Penticton 10.7 cm Flux
  Observed       12 Dec 150
  Predicted   13 Dec-15 Dec  150/150/160
  90 Day Mean        12 Dec 176
V. Geomagnetic A Indices
  Observed Afr/Ap 11 Dec  007/007
  Estimated     Afr/Ap 12 Dec  005/008
  Predicted    Afr/Ap 13 Dec-15 Dec  005/010-005/010-005/010
VI. Geomagnetic Activity Probabilities 13 Dec to 15 Dec
A. Middle Latitudes
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Minor storm01%01%01%
Major-severe storm01%01%01%

All times in UTC

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